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Stand-alone mode:
When both switches are set to the OFF (or up) position
(factory default), the uninterruptible power supply always enters battery-mode during
an AC outage. The unit remains in battery-mode until AC is restored or until the
battery is discharged.
On-battery
and
low-battery
signals are available to the
associated system when an RS-232 cable connection is in place, but there is no
control of the uninterruptible power supply from the system unit. This mode of
operation is typical for the
standby
type of power supplies commonly found in the
marketplace.
Host-dependent mode:
The host-dependent mode is when both DIP switches are
set in the ON (or down) position. During an AC outage, the uninterruptible power
supply does not remain in battery mode for more than five seconds unless there is
an active RS-232 connection present from a powered-on system unit. If the system
unit is turned on, the uninterruptible power supply remains in standby mode. If the
system unit is turned off, the unit does not stay in standby mode.
When AC power is restored, AC power is again available at the uninterruptible
power supply output. This setting is useful for situations where system units are
turned off at the close of business and the main store power is also shut down. This
setting prevents the uninterruptible power supply from switching into standby mode
and discharging the battery when the store power is removed.
I/O devices
The SurePOS 700 Models 723, E23, 743, C43, E43, 783, E83, 784, C84, and E84
support a wide range of displays, keyboards, printers, cash drawers, and scanners.
Refer to the IBM Retail Store Solutions Web site at http://www.ibm.com/solutions/
retail/store/support for a list of currently supported devices.
Note:
Additional I/O installation and operation information is available in the
following publications:
v
Point-of-Sale Options and I/O Devices Service Guide
, GC30-9737
v
Store Systems Installation and Operation Guide for Point-of-Sale
Input/Output Devices
, GA27-4028
A
Figure 13. Location of uninterruptible power supply configuration switches
Chapter 1. Introducing the SurePOS 700 models
21
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